Circle -- An SVG circle

Description

An SVG circle. The two compulsory options are Center (coordinates of the center) and Radius (radius). Instead of the radius, one can specify any point of the circle. In 3d, gives a decent approximation of a sphere.

i1 : Circle{Center=>vector {10,10},Radius=>1,"fill"=>"green","stroke"=>"none"}

o1 = Circle{cache => CacheTable{}             }
            Center => | 10 |
                      | 10 |
                      |  0 |
                      |  1 |
            Radius => 1
            style => MutableHashTable{...2...}

o1 : Circle

i2 : Circle{[10,10],1} -- equivalent syntax for coordinates

o2 = Circle{cache => CacheTable{}      }
            Center => | 10 |
                      | 10 |
                      |  0 |
                      |  1 |
            Radius => 1
            style => MutableHashTable{}

o2 : Circle

i3 : gList(oo,Circle{[0,0],[10,10]})

o3 = GraphicsList{cache => CacheTable{}                                                                 }
                  Contents => {Circle{cache => CacheTable{}      }, Circle{cache => CacheTable{}      }}
                                      Center => | 10 |                     Center => | 0 |
                                                | 10 |                               | 0 |
                                                |  0 |                               | 0 |
                                                |  1 |                               | 1 |
                                      Radius => 1                          Radius => | 10 |
                                      style => MutableHashTable{}                    | 10 |
                                                                                     |  0 |
                                                                                     |  1 |
                                                                           style => MutableHashTable{}
                  style => MutableHashTable{}

o3 : GraphicsList

Types of Circle :

Light -- A source of light

For the programmer

The object Circle is an instance of the type GraphicsType, with ancestor classes Ellipse < GraphicsObject < GraphicsAncestor < HashTable < Thing.